Temperature dependence of spin-orbit torques in W/CoFeB bilayers

Witold Skowroński; Monika Cecot; Jarosław Kanak; Sławomir Ziȩtek; Tomasz Stobiecki; Lide Yao; Sebastiaan Van Dijken; Takayuki Nozaki; Kay Yakushiji; Shinji Yuasa

doi:10.1063/1.4960793

Temperature dependence of spin-orbit torques in W/CoFeB bilayers

Witold Skowroński, Monika Cecot, Jarosław Kanak, Sławomir Ziȩtek, Tomasz Stobiecki, Lide Yao, Sebastiaan Van Dijken, Takayuki Nozaki, Kay Yakushiji, Shinji Yuasa

Research output: Contribution to journal › Article › Scientific › peer-review

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Abstract

We report on the temperature variation of spin-orbit torques in perpendicularly magnetized W/CoFeB bilayers. Harmonic Hall voltage measurements in perpendicularly magnetized CoFeB reveal increased longitudinal and transverse effective magnetic field components at low temperatures. The damping-like spin-orbit torque reaches an efficiency of 0.55 at 19 K. Scanning transmission electron microscopy and X-ray reflectivity measurements indicate that considerable interface mixing between W and CoFeB may be responsible for strong spin-orbit interactions.

Original language	English
Article number	062407
Pages (from-to)	1-4
Journal	Applied Physics Letters
Volume	109
Issue number	6
DOIs	https://doi.org/10.1063/1.4960793
Publication status	Published - 8 Aug 2016
MoE publication type	A1 Journal article-refereed

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title = "Temperature dependence of spin-orbit torques in W/CoFeB bilayers",

abstract = "We report on the temperature variation of spin-orbit torques in perpendicularly magnetized W/CoFeB bilayers. Harmonic Hall voltage measurements in perpendicularly magnetized CoFeB reveal increased longitudinal and transverse effective magnetic field components at low temperatures. The damping-like spin-orbit torque reaches an efficiency of 0.55 at 19 K. Scanning transmission electron microscopy and X-ray reflectivity measurements indicate that considerable interface mixing between W and CoFeB may be responsible for strong spin-orbit interactions.",

author = "Witold Skowro{\'n}ski and Monika Cecot and Jaros{\l}aw Kanak and S{\l}awomir Ziȩtek and Tomasz Stobiecki and Lide Yao and {Van Dijken}, Sebastiaan and Takayuki Nozaki and Kay Yakushiji and Shinji Yuasa",

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volume = "109",

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journal = "Applied Physics Letters",

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Temperature dependence of spin-orbit torques in W/CoFeB bilayers. / Skowroński, Witold; Cecot, Monika; Kanak, Jarosław; Ziȩtek, Sławomir; Stobiecki, Tomasz; Yao, Lide ; Van Dijken, Sebastiaan; Nozaki, Takayuki; Yakushiji, Kay; Yuasa, Shinji.

In: Applied Physics Letters, Vol. 109, No. 6, 062407, 08.08.2016, p. 1-4.

Research output: Contribution to journal › Article › Scientific › peer-review

TY - JOUR

T1 - Temperature dependence of spin-orbit torques in W/CoFeB bilayers

AU - Skowroński, Witold

AU - Cecot, Monika

AU - Kanak, Jarosław

AU - Ziȩtek, Sławomir

AU - Stobiecki, Tomasz

AU - Yao, Lide

AU - Van Dijken, Sebastiaan

AU - Nozaki, Takayuki

AU - Yakushiji, Kay

AU - Yuasa, Shinji

N1 - | openaire: EC/FP7/307502/EU//E-CONTROL

PY - 2016/8/8

Y1 - 2016/8/8

N2 - We report on the temperature variation of spin-orbit torques in perpendicularly magnetized W/CoFeB bilayers. Harmonic Hall voltage measurements in perpendicularly magnetized CoFeB reveal increased longitudinal and transverse effective magnetic field components at low temperatures. The damping-like spin-orbit torque reaches an efficiency of 0.55 at 19 K. Scanning transmission electron microscopy and X-ray reflectivity measurements indicate that considerable interface mixing between W and CoFeB may be responsible for strong spin-orbit interactions.

AB - We report on the temperature variation of spin-orbit torques in perpendicularly magnetized W/CoFeB bilayers. Harmonic Hall voltage measurements in perpendicularly magnetized CoFeB reveal increased longitudinal and transverse effective magnetic field components at low temperatures. The damping-like spin-orbit torque reaches an efficiency of 0.55 at 19 K. Scanning transmission electron microscopy and X-ray reflectivity measurements indicate that considerable interface mixing between W and CoFeB may be responsible for strong spin-orbit interactions.

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U2 - 10.1063/1.4960793

DO - 10.1063/1.4960793

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VL - 109

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EP - 4

JO - Applied Physics Letters

JF - Applied Physics Letters

SN - 0003-6951

IS - 6

M1 - 062407

ER -

Temperature dependence of spin-orbit torques in W/CoFeB bilayers

Abstract

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